10 Best Cordless Angle Grinders 2025 in the United States

The Milwaukee 2880-20 M18 FUEL Cordless Angle Grinder is a well-rounded tool designed for various grinding tasks, making it a solid choice for both DIY enthusiasts and professionals. With its brushless motor, this grinder offers an impressive no-load speed of up to 8,500 RPM, ensuring efficiency in cutting and grinding applications. It operates on an 18V battery, which is compatible with all M18 batteries, providing flexibility for users who already own Milwaukee tools.

One of the standout features is the Electronic Clutch that protects against kickback, enhancing user safety during operation. Additionally, it includes overload protection to extend the motor's life, making it a reliable investment over time. The anti-vibration side handle is another plus, contributing to user comfort, especially during prolonged use.

However, there are a couple of considerations. The grinder is sold as a tool only, meaning you will need to purchase the battery separately if you don’t already have one. This can add to the initial cost for new users. Also, while it is relatively lightweight at around 5 pounds, some users may still find it a bit bulky for extended overhead work. In terms of ergonomics, its compact design helps, but users looking for a more maneuverable option may want to try out other models. The 5-year warranty is a reassuring factor, indicating Milwaukee's confidence in the product's durability.

The DEWALT 20V MAX Cordless 4 1/2 Inch Paddle-Switch Grinder offers a solid mix of power, safety, and comfort for users needing a versatile grinder on the go. Its brushless motor delivers up to 850 horsepower and a maximum no-load speed of 9,000 RPM, providing strong cutting and grinding performance suitable for tough jobs like cutting rebar. The 20V battery system ensures good runtime, with up to 56 cuts on a half-inch rebar, although the battery itself is not included, so you'll need to have or buy one separately. At 4.81 pounds (bare tool), it’s not the lightest grinder in its class but remains manageable for extended use, helped by ergonomic design aimed at reducing fatigue.

Safety is a standout feature here, with DEWALT’s anti-rotation technology including a kickback brake and E-Clutch to prevent sudden tool movements, adding peace of mind during demanding tasks. The paddle-switch style is classic and familiar, but some users may prefer a different switch type based on personal preference. The grinder comes with handy accessories like a side handle and clip-on guard, enhancing control and protection. Its 4 1/2 inch disc size is standard for many metalworking tasks, balancing maneuverability and cutting capacity. This grinder represents a strong choice for those seeking a powerful, cordless tool with advanced safety features and reasonable ergonomics. Just be prepared to invest in batteries separately if you don’t already use DEWALT 20V Max tools.

The DEWALT 20V MAX 4-1/2 Inch Cordless Angle Grinder is a solid choice if you’re looking for a portable and powerful tool for cutting and grinding. It runs on a 20-volt lithium-ion battery (battery sold separately), offering the convenience of cordless use without sacrificing much power. With a disc size of 4-1/2 inches, it’s suitable for a variety of tasks, from metal cutting to surface grinding. The motor can reach up to 8,000 RPM, which is quite fast and efficient for most jobs.

One of the standout features is the Quick-Change Wheel Release, which lets you switch grinding wheels without needing a wrench, saving time and hassle. The tool-free adjustable guard and the two-position side handle also add to ease of use and safety by making adjustments quick and improving control during operation. It has a brushless motor design, meaning it’s more durable and runs cooler compared to older models with brushes, which can extend the tool’s life. Weighing about 4.7 pounds, it is fairly lightweight, making it easier to handle for longer periods without fatigue.

This model is sold as a bare tool, so you’ll need to purchase the battery and charger separately, which adds to the initial cost. The trigger switch with a lock-off button helps prevent accidental starts, although some users might prefer a more ergonomic grip for extended use. While the speed tops out at 8,000 RPM, some competitors offer slightly faster models or larger disc sizes for heavy-duty work. This DEWALT grinder is well-suited for home users and professionals seeking a reliable, easy-to-use cordless angle grinder that balances power, portability, and safety features.